Other pages in this series (31)
Core constant
μₙ/μ_N · neutron magnetic moment to nuclear magneton ratio
중성자 자기 모멘트(핵 마그네톤 단위)
Takeaway
- The relative standard uncertainty barely changed from the 1986 to the 2022 edition (2.4×10⁻⁷ → 2.4×10⁻⁷).
- All 7 earlier editions with a measured value contain the 2022 value within ±1σ (the error bar).
- Every move between editions was below 0.1 times the combined standard uncertainty (|z| < 0.1).
- Unit
- none (dimensionless)
- Note
- Negative by convention.
- M1
- Half-life (years): no decline
Value ±1σ by edition2022
| Editionyear of the recommended values (data cut-off) | As printedexactly as in the source table; digits in parentheses are the standard uncertainty in the last digits | Standard uncertaintyhalf-width of the error bar (±1σ) | Relative standard uncertaintystandard uncertainty ÷ |value|: bar width relative to the value | Exactfixed by definition, uncertainty zero | z vs previous editionmove from the previous edition ÷ combined standard uncertainty of the two | z vs 2022(2022 value − this value) ÷ this edition's standard uncertainty | Source locationpage and table of the paper, or file and line of NIST's table |
|---|---|---|---|---|---|---|---|
| 1986 | −1.91304275(45) | 4.5×10⁻⁷ | 2.4×10⁻⁷ | −0.0222 | codata86 p.10 table 2 | ||
| 1998 | −1.913 042 72(45) | 4.5×10⁻⁷ | 2.4×10⁻⁷ | 0.0471 | −0.0889 | 1998 ASCII:226 | |
| 2002 | −1.913 042 73(45) | 4.5×10⁻⁷ | 2.4×10⁻⁷ | −0.0157 | −0.0667 | 2002 ASCII:227 | |
| 2006 | −1.913 042 73(45) | 4.5×10⁻⁷ | 2.4×10⁻⁷ | 0.0000 | −0.0667 | 2006 ASCII:228 | |
| 2010 | −1.913 042 72 | 4.5×10⁻⁷ | 2.4×10⁻⁷ | 0.0157 | −0.0889 | 2010 ASCII:239 | |
| 2014 | −1.913 042 73 | 4.5×10⁻⁷ | 2.4×10⁻⁷ | −0.0157 | −0.0667 | 2014 ASCII:239 | |
| 2018 | −1.913 042 73 | 4.5×10⁻⁷ | 2.4×10⁻⁷ | 0.0000 | −0.0667 | 2018 ASCII:247 | |
| 2022 | −1.913 042 76 | 4.5×10⁻⁷ | 2.4×10⁻⁷ | −0.0471 | 2022 ASCII:248 |